# Info for our new Internet / Social network > [https://info.ourworld.tf/duniayetu](https://info.ourworld.tf/duniayetu) ## First install hero: ```bash # Download the hero installer script curl https://raw.githubusercontent.com/freeflowuniverse/crystallib/development/scripts/installer_hero.sh > /tmp/hero_install.sh # Run the script as root to properly complete the script (e.g. sudo bash ...) bash /tmp/hero_install.sh # Check how to use, can also do on each of the subcommands hero -help # If it can't find hero, do the following on osx source ~/.zprofile ``` There is also a quick guide on setting mdbook and hero on a full VM running on the TFGrid. Read the [docs](./docs/hero_mdbook_fullvm.md) for more information. ## to run the book ```bash hero mdbook -u https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/heroscript # In case you want to open the generated book and edit hero mdbook -u https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/heroscript -e ``` ## troubleshoot ### for Ubuntu, ... ```bash apt update apt install curl -y ``` ### for OSX if you see the following, it means you have an outdated brew on your laptop ```bash ## stderr: Error: Cannot install under Rosetta 2 in ARM default prefix (/opt/homebrew)! ``` to fix: ```bash #uninstall /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/uninstall.sh)" rm -rf /opt/homebrew #re-install homebrew /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" ```